How to make the menu multilevel?

Question

JavaScript

Here is my horizontal menu, with a drop down item Help. How can it be implemented so that by clicking on , a list with new elements (multilevel menu) opens to the left?Пункту 3

<div class="collapse navbar-collapse justify-content-end" id="navigation" data-nav-image="/views/img/blurred-image-1.jpg">
                <ul class="navbar-nav">
                    <li class="nav-item">
                      <a class="nav-link" href="/profile">
                          <span>
                            <i class="now-ui-icons arrows-1_minimal-left"></i>
                          </span>
                          <p>Back</p>
                      </a>
                    </li>
                    <li class="nav-item dropdown">
                    <a class="nav-link dropdown-toggle" href="" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                       <span>
                         <i class="now-ui-icons gestures_tap-01"></i>
                       </span>
                        <p>
                          Help
                        </p>
                 </a>
                <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
                        <a class="dropdown-item" href="">Пункт 1</a>
                        <a class="dropdown-item" href="">Пункт 2</a>
                        <a class="dropdown-item" href="">Пункт 3</a>
               </div>
           </li>                    
       </ul>
</div>